The Carolina Panthers have placed tight end Greg Olsen on injured reserve and signed fullback Alex Armah to the active roster from the practice squad, the team announced Tuesday.

He cannot practice for at least 6 weeks and cannot return to games for at least 8 weeks.

Olsen, who joined the Panthers in 2011 after a trade with the Chicago Bears has produced three consecutive 1,000-yard seasons, making the Pro Bowl in each season. The injury will end Olsen’s streak of 160 consecutive games played dating to 2007, the second longest active streak among tight ends behind Dallas’ Jason Witten (221).